A tapered-permittivity rod antenna for ground penetrating radar applications

被引：12

作者：

Chen, CC ^{[1
]}

Rao, KR ^{[1
]}

Lee, R ^{[1
]}

机构：

[1] Ohio State Univ, Electrosci Lab, Columbus, OH 43212 USA

来源：

JOURNAL OF APPLIED GEOPHYSICS | 2001年 / 47卷 / 3-4期

关键词：

antenna; ground penetration radar; landmines; modeling;

D O I：

10.1016/S0926-9851(01)00074-X

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A new dielectric rod antenna design modified from its previous version developed by Chen [IEEE Trans. Geosci. Remote Sens. (accepted for publication)] is presented. Such an antenna is useful in detecting small and shallow subsurface objects with excellent depth and spatial resolutions. These features make it useful in detecting small anti-personnel (AP) mines, pavement cracks and the surface layer. Broad bandwidth electromagnetic energy is fed into the rod from one end, guided along the rod and then radiated from the other end where the rod diameter is linearly tapered to a point. The tapered-permittivity design uses an additional permittivity taper to overcome the problem of a frequency-dependent pattern when high dielectric material is used for size reduction. This new design reduces the internal reflections at the tapered section and results in better efficiency and less antenna clutter. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：309 / 316

页数：8

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